1
Patrick W Truitt, Kay Herbert: Impeller and a pressure support system and method using such an impeller. Respironics, Michael W Haas, September 23, 2003: US06622724 (57 worldwide citation)

An impeller, a pressure generator using such an impeller, and a pressure support system and method using such a pressure generator to deliver a flow of breathing gas to a patient is disclosed. The impeller enables a pressure of a flow of breathing gas delivered by a pressure support system to a pati ...


2
Russell Hughes Norris: Devices and methods for reducing noise in a blower housing. Koninklijke Philips, September 19, 2017: US09765796

Devices and methods for reducing noise of a blower reduce and/or substantially block the exchange of gas within the blower housing from an area of a generally high-velocity flow of gas to an area of a comparatively lower-velocity flow of gas, for example near the outlet of the blower housing.